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    <title>Document</title>
    <script>
        Date.prototype.Format = function (fmt) {   
            var o = {
                "M+": this.getMonth() + 1,                      //月份   
                "d+": this.getDate(),                           //日   
                "h+": this.getHours(),                          //小时   
                "m+": this.getMinutes(),                        //分   
                "s+": this.getSeconds(),                        //秒   
                "q+": Math.floor((this.getMonth() + 3) / 3),    //季度   
                "S": this.getMilliseconds()                     //毫秒   
            };
            if (/(y+)/.test(fmt))
                fmt = fmt.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));
            for (var k in o)
                if (new RegExp("(" + k + ")").test(fmt))
                    fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length)));
            return fmt;
        }
        var t = new Date().Format("yyyy-MM-dd hh:mm:ss");
        console.log(t);
    </script>
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